Hare Krsna
The present Navadvīpa-dhāma is but a part of the whole of Navadvīpa. Navadvīpa means “nine islands.” These nine islands, which occupy an area of land estimated at thirty-two square miles, are surrounded by different branches of the Ganges. In all nine of those islands of the Navadvīpa area there are different places for cultivating devotional service. It is stated in Śrīmad-Bhāgavatam (SB 7.5.23) that there are nava-vidha bhakti, nine different activities of devotional service:
śravaṇaṁ kīrtanaṁ viṣṇoḥ smaraṇaṁ pāda-sevanam
arcanaṁ vandanaṁ dāsyaṁ sakhyam ātma-nivedanam
There are different islands in the Navadvīpa area for cultivation of these nine varieties of devotional service. They are as follows: (1) Antardvīpa, (2) Sīmantadvīpa, (3) Godrumadvīpa, (4) Madhyadvīpa, (5) Koladvīpa, (6) Ṛtudvīpa, (7) Jahnudvīpa, (8) Modadruma-dvīpa and (9) Rudradvīpa.
(CC Adi 13.30 purport)
All the facilities suggested in this mantra can be easily obtained by constant contact with the personal feature of the Absolute Truth. Devotional service to the Lord consists essentially of nine transcendental activities: (1) hearing about the Lord, (2) glorifying the Lord, (3) remembering the Lord, (4) serving the lotus feet of the Lord, (5) worshiping the Lord, (6) offering prayers to the Lord, (7) serving the Lord, (8) enjoying friendly association with the Lord, and (9) surrendering everything unto the Lord. These nine principles of devotional service – taken all together or one by one – help a devotee remain constantly in touch with God. In this way, at the end of life it is easy for the devotee to remember the Lord. By adopting only one of these nine principles, the following renowned devotees of the Lord were able to achieve the highest perfection: (1) By hearing of the Lord, Mahārāja Parīkṣit, the hero of Śrīmad-Bhāgavatam, attained the desired result. (2) Just by glorifying the Lord, Śukadeva Gosvāmī, the speaker of Śrīmad-Bhāgavatam, attained his perfection. (3) By praying to the Lord, Akrūra attained the desired result. (4) By remembering the Lord, Prahlāda Mahārāja attained the desired result. (5) By worshiping the Lord, Pṛthu Mahārāja attained perfection. (6) By serving the lotus feet of the Lord, the goddess of fortune, Lakṣmī, attained perfection. (7) By rendering personal service to the Lord, Hanumān attained the desired result. (8) Through his friendship with the Lord, Arjuna attained the desired result. (9) By surrendering everything he had to the Lord, Mahārāja Bali attained the desired result.
(Sri Isopanisad 17)